# 程序输入，参数赋值
cars =100
space_in_a_car = 4.0
drivers = 30
passengers =90
# 计算
cars_not_driven = cars - drivers
cars_driven = drivers
carpool_capacity = cars_driven * space_in_a_car
average_passengers_per_car = passengers / cars_driven

# 程序输出
print("There are",cars,"cars available.")
print("There are only",drivers,"drivers available.")
print("There will be",cars_not_driven,"empty cars today.")
print("We can transport",carpool_capacity,"people today.")
print("We have",passengers,"to carpool today.")
print("We need to put about",average_passengers_per_car,"in each car.")